BSC 2011 USF | University of South Florida | UPDATED
Questions with 100% Verified Answers
Q1: Which of the following reproductive barriers actually prevents
individuals of closely related species from copulating
successfully?
A: Mechanical isolation
Q2: A) Hybrid breakdown
B) Mechanical isolation
C) Hybrid sterility
D) Gametic isolation
E) Hybrid inviability
A:
Q3: A new species of plant is discovered that closely resembles a
known species. Upon further examination, it is discovered that
the new species has a tetraploid number of 4n = 12, while the
known species has a diploid number of 2n = 6.
Which of the following statements provides a reasonable
explanation for the evolution of this new species of plant?
A:
Q4: A horse and a donkey can reproduce successfully, producing
a mule. However, the mule is sterile. This is an example of a
__________ barrier called __________.
A)postzygotic; hybrid breakdown
B) postzygotic; reduced hybrid viability
C)postzygotic; reduced hybrid fertility
D)prezygotic; mechanical isolation
A: postzygotic; reduced hybrid fertility
Q5: According to the __________, a species is a group of populations
whose members have the potential to interbreed in nature
and produce viable, fertile offspring—but do not produce
viable, fertile offspring with members of other such groups.
A: biological species concept
Q6: a- morphological species concept
A:
Q7: b- phylogenetic species concept
,A:
Q8: c- biological species concept
A:
Q9: d- macroevolution
A:
Q10: e-ecological species concept
A:
Q11: Sympatric speciation typically occurs by all of the following
mechanisms except __________.
a- allopolyploidy
A: a geographic barrier splitting a population
Q12: b- polyploidy
A:
Q13: c- sexual selection
A:
Q14: d- autopolyploidy
A:
Q15: e- a geographic barrier splitting a population
A:
Q16: f- habitat differentiation
A:
Q17: A horse and a donkey can reproduce successfully, producing
a mule. However, the mule is sterile. This is an example of a
__________ barrier called __________.
A: postzygotic; reduced hybrid fertility
Q18: a- postzygotic; hybrid breakdown
A:
Q19: b- prezygotic; gametic isolation
,A:
Q20: c- postzygotic; reduced hybrid viability
A:
Q21: d- postzygotic; reduced hybrid fertility
A:
Q22: e- prezygotic; mechanical isolation
A:
Q23: A new species of plant is discovered that closely resembles a
known species. Upon further examination, it is discovered that
the new species has a tetraploid number of 4n = 12, while the
known species has a diploid number of 2n = 6.
Which of the following statements provides a reasonable
explanation for the evolution of this new species of plant?
Answer
A: An error in cell division occurred in the known species, leading to the development of an
autopolyploid tetraploid offspring that evolved into the new species.
Q24: a- Four gametes from the known species of plant all fused to
form the new species.
A:
Q25: b- Gametes from two different species of plant that are both
2n = 6 mated and produced a new plant with 2n = 12.
A:
Q26: c- An error in cell division occurred in the known species,
leading to the development of an autopolyploid tetraploid
offspring that evolved into the new species.
A:
Q27: d- A geographic barrier separated a population of the known
species, leading to the evolution of the new species.
A:
Q28: e- None of the listed responses is correct.
A:
, Q29: Which of the following is an example of a postzygotic
reproductive barrier?
A: Two fruit flies of different species produce sterile offspring.
Q30: A) One species of flower grows in forested areas, another in
meadows.
B) Two pheasant species perform different courtship dances.
C) One species of frog mates in April, but another mates in
May.
D) The sperm of a marine worm can only penetrate eggs of
the same species.
E) Two fruit flies of different species produce sterile offspring.
A:
Q31: Prezygotic barriers _____.
A: prevent fertilization of gametes from members of closely related species
Q32: A) Are necessary in order for speciation to occur
B) Prevent fertilization of gametes from members of closely
related species
C) Prevent a hybrid zygote from developing into a viable,
fertile adult
D) Only occur in asexual organisms
E) Prevent donkeys and horses from mating
A:
Q33: According to the punctuated equilibrium model of evolution,
__________.
A: the tempo of evolution consists of abrupt episodes of speciation among long periods of
equilibrium
Q34: a-None of the listed responses is correct.
A:
Q35: b-polyploidy is not a mechanism of punctuated equilibrium
A:
Q36: c-the tempo of evolution consists of abrupt episodes of
speciation among long periods of equilibrium
A:
Q37: d-isolated species changing over a few thousand generations
represent graduated equilibrium, not punctuated equilibrium
Questions with 100% Verified Answers
Q1: Which of the following reproductive barriers actually prevents
individuals of closely related species from copulating
successfully?
A: Mechanical isolation
Q2: A) Hybrid breakdown
B) Mechanical isolation
C) Hybrid sterility
D) Gametic isolation
E) Hybrid inviability
A:
Q3: A new species of plant is discovered that closely resembles a
known species. Upon further examination, it is discovered that
the new species has a tetraploid number of 4n = 12, while the
known species has a diploid number of 2n = 6.
Which of the following statements provides a reasonable
explanation for the evolution of this new species of plant?
A:
Q4: A horse and a donkey can reproduce successfully, producing
a mule. However, the mule is sterile. This is an example of a
__________ barrier called __________.
A)postzygotic; hybrid breakdown
B) postzygotic; reduced hybrid viability
C)postzygotic; reduced hybrid fertility
D)prezygotic; mechanical isolation
A: postzygotic; reduced hybrid fertility
Q5: According to the __________, a species is a group of populations
whose members have the potential to interbreed in nature
and produce viable, fertile offspring—but do not produce
viable, fertile offspring with members of other such groups.
A: biological species concept
Q6: a- morphological species concept
A:
Q7: b- phylogenetic species concept
,A:
Q8: c- biological species concept
A:
Q9: d- macroevolution
A:
Q10: e-ecological species concept
A:
Q11: Sympatric speciation typically occurs by all of the following
mechanisms except __________.
a- allopolyploidy
A: a geographic barrier splitting a population
Q12: b- polyploidy
A:
Q13: c- sexual selection
A:
Q14: d- autopolyploidy
A:
Q15: e- a geographic barrier splitting a population
A:
Q16: f- habitat differentiation
A:
Q17: A horse and a donkey can reproduce successfully, producing
a mule. However, the mule is sterile. This is an example of a
__________ barrier called __________.
A: postzygotic; reduced hybrid fertility
Q18: a- postzygotic; hybrid breakdown
A:
Q19: b- prezygotic; gametic isolation
,A:
Q20: c- postzygotic; reduced hybrid viability
A:
Q21: d- postzygotic; reduced hybrid fertility
A:
Q22: e- prezygotic; mechanical isolation
A:
Q23: A new species of plant is discovered that closely resembles a
known species. Upon further examination, it is discovered that
the new species has a tetraploid number of 4n = 12, while the
known species has a diploid number of 2n = 6.
Which of the following statements provides a reasonable
explanation for the evolution of this new species of plant?
Answer
A: An error in cell division occurred in the known species, leading to the development of an
autopolyploid tetraploid offspring that evolved into the new species.
Q24: a- Four gametes from the known species of plant all fused to
form the new species.
A:
Q25: b- Gametes from two different species of plant that are both
2n = 6 mated and produced a new plant with 2n = 12.
A:
Q26: c- An error in cell division occurred in the known species,
leading to the development of an autopolyploid tetraploid
offspring that evolved into the new species.
A:
Q27: d- A geographic barrier separated a population of the known
species, leading to the evolution of the new species.
A:
Q28: e- None of the listed responses is correct.
A:
, Q29: Which of the following is an example of a postzygotic
reproductive barrier?
A: Two fruit flies of different species produce sterile offspring.
Q30: A) One species of flower grows in forested areas, another in
meadows.
B) Two pheasant species perform different courtship dances.
C) One species of frog mates in April, but another mates in
May.
D) The sperm of a marine worm can only penetrate eggs of
the same species.
E) Two fruit flies of different species produce sterile offspring.
A:
Q31: Prezygotic barriers _____.
A: prevent fertilization of gametes from members of closely related species
Q32: A) Are necessary in order for speciation to occur
B) Prevent fertilization of gametes from members of closely
related species
C) Prevent a hybrid zygote from developing into a viable,
fertile adult
D) Only occur in asexual organisms
E) Prevent donkeys and horses from mating
A:
Q33: According to the punctuated equilibrium model of evolution,
__________.
A: the tempo of evolution consists of abrupt episodes of speciation among long periods of
equilibrium
Q34: a-None of the listed responses is correct.
A:
Q35: b-polyploidy is not a mechanism of punctuated equilibrium
A:
Q36: c-the tempo of evolution consists of abrupt episodes of
speciation among long periods of equilibrium
A:
Q37: d-isolated species changing over a few thousand generations
represent graduated equilibrium, not punctuated equilibrium
